Physics Questions

Q:

In beta decay what is emitted

A) electron B) proton
C) neutron D) All of the above
 
Answer & Explanation Answer: A) electron

Explanation:
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Q:

The coil wire in the electric room heater or electric cooking heater is called __________.

A) Circuit B) Element
C) Filament D) Cells
 
Answer & Explanation Answer: B) Element

Explanation:
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Q:

Which of these liquids has the highest viscosity?

A) Milk B) Syrup
C) Pineapple juice D) Water
 
Answer & Explanation Answer: B) Syrup

Explanation:

The viscosity of a fluid is a measure of its resistance to deformation at a given rate. For liquids, it corresponds to the informal concept of "thickness".

Here in the given options, syrup has the highest viscosity.

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3 2520
Q:

Middle latitude cyclones are fueled by? 

A) air high in the atmosphere B) polar continental air masses
C) energy from falling precipitation D) All of the above
 
Answer & Explanation Answer: A) air high in the atmosphere

Explanation:

Extratropical cyclones, sometimes called mid-latitude cyclones or wave cyclones, are low-pressure areas which, along with the anticyclones of high-pressure areas, drive the weather over much of the Earth.

 

Middle latitude cyclones are fueled by air high in the atmosphere.

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Q:

"When a card placed over a tumbler is flicked with the finger, the coin placed over it falls in the tumbler".

A) Law of conservation of energy B) Newton's third law of motion
C) Law of Inertia D) Law of conservation of momentum
 
Answer & Explanation Answer: C) Law of Inertia

Explanation:
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Q:

The combined gas law relates which of the following?

A) Volume & Temperature B) Temperature & Pressure
C) Volume & Pressure D) Volume, Temperature & Pressure
 
Answer & Explanation Answer: D) Volume, Temperature & Pressure

Explanation:

The combined gas law states that the ratio between the pressure-volume product and the temperature of a system remains constant.

 

Hence it depends on all the three Volume, Temperature & Pressure.

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2 2506
Q:

A 4 kg object is moving horizontally with a speed of 5 m/s. To increase its speed to 10 m/s, the amount of net work required to be done on this object is:

A) 150 J B) 100 J
C) 50 J D) 75 J
 
Answer & Explanation Answer: A) 150 J

Explanation:
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Q:

What property of matter is momentum related to?

A) mass B) velocity
C) Both A & B D) None of the above
 
Answer & Explanation Answer: C) Both A & B

Explanation:

At any given speed, momentum is directly proportional to mass of an object.

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